Hydraulic hoist dumping body



April 18, 1933. W. C ANTHONY ET AL 1,904,345

HYDRAULIC HOIST DUMPING BODY Filed NOV. 19, 1950 5 Sheets-Sheet l Int/anions WZZZzbmz Cflmfkany HYDRAULIC HOIST DUMPING BODY Filed Nov. 19, 1930 3 Sheets-Sheet 2 1933- w. c. ANTHONY El AL HYDRAULIC HOIST DUMPING BODY Filed Nov. 19, 1930 3 Sheets-Sheet 5 Patented Apr. 18, 1933 UNITED STATES PATENT OFFICE WILLIAH ANTHONY AND LESTER WACHTER, OF STREATOR, ILLINOIS, ASSIGNOBS TO THE ANTHONY COMPANY, OF STBEATOB, ILLINOIS, A CORPORATION 01 rumors HYDRAULIC HOIST DUMPING BODY Application filed November 19, 1980. Serial No. 496,632.

This invention relates to a dumping body and to means for moving it to dump it.

One-object is to provide a'hydraulic dumping body anda mechanism for dumping it.

5 Another object is to provide a hydraulic operating mechanism by means of which the body may be dumped. Another object is to provide a hydraulic dumping assembly, in

which the actuating parts may be driven in either direction by the substitution of a single member.

Other objects will appear from time to time in the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein- Figure 1 is a side elevation showing the body in position on a truck, with the dumping osition indicated in dotted lines;

Figure 2 is a plan view of the vehicle frame, with the body and a portion of the dumping mechanism removed;

Figure 3 is an end elevation with parts broken away and parts in section, showing the pumping mechanism;

Figure 4 is a vertical cross section, taken at line 4-4 of Figure 3;

Figure 5 is a side elevation of the truck, and body tipping mechanism, with the body removed, showing a modified form of controlling and stopping mechanism, with parts in section.

Figure 6 is a similar view, showing a further modified form of the controlling and stopping mechanism.

Like parts are designated by like characters throughout the specification and draw- 1n s.

it, A are automobile frame members. A is a seat. A are wheels. A is an axle. A are springs. A, A are cross frame'members.

A, A are angles preferably supported on the cross frame members. A", A are pivots on the rear cross frame member A, upon which a body A is pivotally mounted.

inder D. D is a ball check valve control- B is a body raising lever preferably comprising two side members, as indicated in Figure 2. It is mounted on a shaft B which is supported on the angles A. At its upper or free end each side member of the lever B carries a roller B which contacts the bottom of the body A and may run in a track provided on the bottom of the body.

C is a cross head provided with pairs of Wheels C adapted to run on track members 0 which are supported on the angles A. The cross head C also has a pair of wheels C adapted to contact the under side of the side members of the lever B as indicated particularly in Figure 1. The cross head is fastened to a piston rod G which extends Within a hydraulic cylinder D. The details of the piston and the interior of the cylinder will be described below.

The cylinder itself may be supported at one end upon a cross member D which is joined to the angles A and the cylinder is held against displacement by means of a U- bolt D which is fastened to the cross member D At its opposite end the cylinder is fastened to a housing D A supporting and connecting member D passes through the housing and its ends rest upon and are preferably engaged in the angles A. The housing D is provided with an inlet port D within which is seated a ball check valve D". It is also provided with a cavity or hollow space D having a plurality of outlets D and communicating with the interior of the. cylling discharge from the cylinder D to the cavity D The valve D is normally held seated by the spring shown, or b pressure Within the cylinder or by both. controlling member for unseating the valve is provided in the shaft-like part I) which has a flattened portion D and a controlling lever D extending preferably above the axis of movement of the member D. The shaft-like member B may be positioned 90 as shown in Figure 4 and in that position its flattened portion is in contact with the ball valve and the latter remains closed. If the shaft is rotated, the ball is forced out of the flattened portion and the valve is opened. At its outer end the cylinder D may be closed by a plate or head D which may be of any suitable design and 'in which a stufling box or other necessar parts maybe positioned. An adjustable va ve opening member D is positioned within the member D". As

shown, it comprises a screw, adjustable in and out in the member D", and carries at its inner end a contact head D". D is a pipe or passa e running preferably from the outer end 0% the cylinder D to the space D within the housing D. By means of this passage fluid on the right of the piston, as indicated in Figure 4, may move from that position, back into the main fluid supply chamber or tank.

The piston may be formed of two members E, E which are preferably metallic and which support and partially enclose a cupshaped leather or fabric member E. A ball check valve E may be positioned in the piston. When pressure is on the left side of the piston, as shown in Figure 4, the valve is held seated. When the piston approachesed in Figure 3. Formed along one side of the member F and preferably integrally with it, is a pressure passage F which communicates with the pressure inlet D in the housing D and through which oil under pressure is forced to the cylinder to move the piston. In the bottom of the chamber formed'within the member F are two openings F, F". These communicate with a ulmp in the manner which will be described Joined to the reservoir member F is a pump. A portion of the pump housing may be integral with the reservoir or 1t may be made separately and attached to it. In the form shown herewith the main portion of the pump housing is shown as being integral with t e reservoir member F and it is provided with a separate cover plate which completes the pump housing.

The pump housing thus is formed of a portion G and a separate cover plate. The housing portion G will be described first. As indicated particularly in Figure 4, a portion of the passage F, above mentioned, extends into or lies within the housing portion G. G is a duct or passage formed within the housing G and normally placed opposite or formed 0 posite the opening F in the member F. hat portion of the passage F which lies within the housing member G is joined to two op ositely directed branches G and G each of which has an outlet or inlet opening G, G", respectively. G, G are cavlties formed within the member G and adapted to receive gears G G of a gear pump. The gear G is carried on a stub shaft G and the gear G is carried on a driven shaft G".

H is a cover plate which is mounted upon or attached by any suitable means to the pump housing member G. It is provided with a cavity H which serves as a bearing for the stub shaft G and is provided with an opening or perforation H through which the drive shaft G may pass. Any suitable packing arrangement may be provided to prevent leakage.

In Figures 1' and 5 is illustrated a throwout mechanism. As described, the check valve D will normally remain in the closed position as shown in Figure 4, unless the shaft D is rotated so as to move the depression or flat portion D out of contact with the ball and thus to unseat the ball and to open the valve. As shown in Figure 1, the lever D is provided with a forwardly reaching link I which may be fastened to a hand lever I situated conveniently to be manipulated by the driver. By moving the handle I he may rotate the shaft D and thus open the check valve and stop the raising of the body in any suitable position. The portion D" of the lever D which projectsbelow the axis of rotation of the shaft D mightbe continuous with the upwardly projecting part or might be set at the opposite end of the shaft as indicated in Figure 12. Fastened to this downwardly projecting portion is a rearwardly projecting link I which is downwardly bent as at I and carries an adjustable contact member I which will be struck by some part of the cross head or a part carried by the cross head as it approaches or reaches its outer limit, so that the shaft D will be rotated to open the valve and stop the hoisting.

In the form shown in Figure 6, the hand throw-out connection is the same as that shown in the earlier forms. The lower portion D or downwardly extending portion of the lever D is omitted. The safety or limiting throw-out does not act upon the valve but upon the power take off to stop rotation of the pump and thus to stop further discharge of fluid into the pressure cylinder and accordingly to stop further raising of the body. J is a power take off from which a shaft J leads to the pump. J 2 is a pivoted lever. At its lower end a link J 8 passes through it and is fastened to it with a movable connection which is made possible by the use of the spring J. At its other end the link J 3 is fastened to a power take off controlling lever J. Extending rearwardly from the lever J 2 is a link J having an upwardly bent portion J 7 which carries an adjustable contact member J This member is positioned to be contacted by some part of the cross head or cross head assembly. When the cross'head approaches or reaches the outer limit of its movement, it strikes the contact member J and by means of the linkage shown, the power take off is, disconnected and the pump is stopped.

K, K are ears or projections formed on the side of the reservoir F and extending laterally from it. The-outer ends of the ears are preferably downwardly bent as indicated in Figure 3. K is a bolt passing between the ears and having its head engaged between them. K is a spring positioned about the upper end of the bolt and bearing at one end upon the horizontal flange of the angle A. K is a nut positioned upon the bolt K. K is a washer positioned between the nut and the spring K It will be realized that whereas I have herewith shown and described a practical operative device," nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my invention and I wish,'therefore, that my showing be taken as in a sense diagrammatic.

Particularly the means for automatically limiting the movement of the piston in the raising direction might be changed. Any one of the several means shown might be used and almost any other means might be used. Under some conditions no automatic stop or throw-out would be used and the COIILIOl would be entirely manual.

The use and operation of my invention are as follows:

If the parts are in the position shown in full line in Figure 1 and it is desired to dump the body, the power take-oil control is operated so as to drive the pump and fluid is forced from the pump into the cylinder. The piston is thus moved outwardly or to the right, as indicated in the figures, and the rollers which are carried by the cross head attached to the piston are forced under the lever assembly B, the latter being tilted up wardly. As it moves about its plvot, rollers at its upper end move in' contact with the bottom of the body bearing either directly uponit or in channels or tracks, as shown, and the body is correspondingly tilted 'upwardly, as indicated in dotted lines in Figure 1. When the body has been moved in the tilted direction as far as desired, the movement of the piston is stopped, either by stopping the pump or by operating one of the controls, either automatic or manual, so as to open the relief valve E in the piston or to open the valve D Ordinarily it is preferable to use one of the forms of automatic throw-out to prevent injury to the parts and to prevent excessive dumping movement.

The throw-out mechanismv illustrated in Figures 1 and 4, includes both an automatic and a manual throw-out. As shown in Figurexithe piston is provided with a ball check valve E and a. cylinder head D is provided with a stop member D, D, positioned to contact this valve. As the piston moves outwardly under the influence of pressure on ,its left side, as shown in Figure 4, it finally comes to a position in which the member D contacts the ball E forces it from its seat and thus opens it and permits liquid to discharge through the valve. When this takes place the force moving the piston to the right or in the dumping direction, is not sufiicient to continue the movement of the piston and this thus, serves as an automatic stop for movement of the piston. In the form shown in Figure 4, there is also provided a manual control. The valve D in the opposite, end of the cylinder is ordinarily held closed by the spring shown against it and by pressure within the cylinder. At any time in the cycle of operation this valve may be opened by rotating the shaft D so as to move the depression D out of contact or alignment with the ball D When this takes place, the ball is raised from its seat and liquid may discharge through the valve and thus the pressure forcing the piston to move outwardly in the dumping direction is reduced and outward movement of the piston is stopped. The parts may be so proportioned that when this valve is opened the weight of the body will move the piston in the reverse or left hand direction and so when this valve is opened the body may be permitted to return to its original position. The parts, however, may be so proportioned that the opening of the valve is not sufiicient to permit lowering of the body but is merely sufficient to prevent further raising movement. The manual control of the valve D is, of course, accomplished by means of the hand lever I and the link I acting on the upwardly extending portion of the lever D.

As shown in Figure 5 this form of automatic throw-out is provided. In this form means are provided for opening the ball check valve D automatically in response to movement of the piston in the outward or dumping direction. The adjustable contact member I will be struck by some part of the outwardly moving cross head. This will rotate the downwardly extending portion of the lever D and will so move the shaft D as to unseat the ball D. In this form of the device, the valve in the piston would ordinarily be omitted.

In Figure 6 a further modified form of throw-out device is shown. In the early forms of throw-out the pump may continue constantly in motion and the operation of the valves alone serves to stop the raising of the body and to permit its return to its original position. In the form shown in Figure 13 the pump is stop ed by disconnecting the power take-off mec anism. In the operation of this throw-out an adjustable contact member J is provided and sitioned to be struck or contacted by a portion of the cross head assembly. When this takes place the lever J 2 is moved and through it the link J is also moved to operate the lever J 5 and to disconnect the ump driving means for the power take-ofl. The spring J is provided to cushion the shock of the movement and to permit the play necessary when the parts are again put into driving connection to start the pump.

The entire assembly is designed, of course, to be mounted on a vehicle frame and inevitably when such a vehicle is driven along a road surface some flexing or Weaving of the vehicle frame will take place. To compensate for this or to prevent breaking or straining of the parts as a result of it, the pump and assembly are given a three-polnt suspension. The pump assembly is supported at one end upon the shaft or ball D, which rests at each end in one of the angles A. At its forward end the cylinder is supported on the cross member D to which it is fastened by the U;-bolt D This U-bolt is preferably left slightly loose so as to permit some movement of the cylinder in it. In most automotive vehicles the drive shaft of the vehicle is positioned centrally and to permit this to pass the reservoir F is bent laterally as indicated in Figure 3. To compensate for the unequal distribution of the weight which results from this formation the reservoir is supported on its side. For this purpose the reservoir is provided with the outwardly projecting ears K, K, through which a bolt K passes, the head of the bolt being engaged in the ears. The bolt passes through one of the angles A and has about it and above the angle a compression spring K which is held in adjustable position on the bolt by a nut K and a washer K. The compression of the spring may be adjusted and it and the bolt serve to provide a cushioned support for the reservoir and the pump assembly which is attached to it.

I claim:

1.- In combination with an automotive vehicle having a frame, a dumping receptacle pivotally supported therefrom, means for dumping the receptacle, said means including a hydraulic assembly, said assembly being mounted on the frame with a threeoint suspension, a portion of the assembly ing laterally bent from the longitudinal axis of the assembly, and shock absorbing means for supporting its weight.

2. In combination with an automotive vehicle having a frame, a dumping receptacle and shock absorbing means engaging a hydraulic assembly, said assembly being mounted on the frame with a three-point suspension, the mounting'adapted to permit rotary movement of the assembly at one point, a portion of the assembly being laterally bent from the longitudinal axis of the assembly, and shock absorbing means for supporting its weight.

4. In combination with an automotive vehicle including a frame, a body mounted on the vehicle and meansfor tipping it, said means including a reservoir for fluid depending from said frame and having a portion laterally bent from the longitudinal axis of the vehicle, a pump carried by said reservoir to receive fluid therefrom, a cylinder extending longitudinally of the vehicle, and conduits between the pump and cylinder through which the pump forces fluid to cause tipping of the body.

5. In combination with an automotive vehicle including a frame, a body mounted on the vehicle and means for tipping it, said means including a reservoir for fluid depending from said frame and having a portion laterally bent from the longitudinal axis of the vehicle, a pump carried by said reservoir to receive fluid therefrom, a cylinder extending longitudinally of the vehicle, and conduits formed in the reservoir'and communicating with the pump and cylinder.

Signed at Streator, county of LaSalle and State of Illinois, this 8th day of November,

WILLIAM C. ANTHONY. LESTER WACHTER. 

